A

The correct answer is C (Hippocampus).

Explanation:

Hippocampus is an area of the human brain responsible for memory, both short- and long-term. After just one or two drinks, the function of the brain becomes damaged by alcohol, inhibiting most processes occurring in the hippocampus.

Hippocampus also regulates spatial navigation, which is the reason why drinking and driving is dangerous. Below is an image of the brain showing the location of the hippocampus.

Parts of brain.
Source: http://sciencenetlinks.com

Other than memory loss and reduced ability for spatial navigation, potential side effects of alcohol include poor decision-making capacity, blurred vision, blackout, and the loss of attention span. Long-term effects of alcohol consumption are impaired brain development, heart disease, cirrhosis, stomach ulcers, and more.